THE SOURCE TO SINK CHARACTER OF THE SHAHEJIE FORMATION IN THE SHULU SLOP, BOHAI BAY BASIN, CHINA
Liyuan Liu1, Zongbao Liu 1*, Rongsheng Zhao2*, Xiwei Li3, Xue Li4, Xin Luo1, Lei Zhao5,6, Tao Liu7
1School of Earth Sciences, Northeast Petroleum University, 163318, Daqing, Fazhan Road, No.184, China
2School of Earth Sciences, Jilin University, 130061, Changchun, Jianshe Street, No.2199, China
3Exploration Division of HuaBei Oilfield Company, 062552, RenQiu city, Huizhan road North China Oilfield Hotel south, China
4Exploration and Development Research institute of HuaBei Oilfield Company, 062552, RenQiu city, No.1, Jianshe Middle Road, China
5Research Center for Computational and Exploration Geophysics, State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430077, Wuhan, XuDong, No.340, China
6University of Chinese Academy of Sciences, 100049, Beijing, YuQuan, No.19, China
7School of Computer & Information Technology, Northeast Petroleum University, 163318, Daqing, Fazhan Road, No.99, China
Ключевые слова: Lacustrine rift basin, Shulu slope, Es3, source to sink, sedimentary characteristics
Аннотация
Erosion and sedimentary landforms are linked through sediment transport pathways which forms the source to sink system (S2S). The coupling relationship of different components in the clastic sediment system is emphasized by the S2S concept. A new method to characterize the sedimentary process of continental rift basins is also provided. It has been proved that there is rich exploration potential in the third member of the Shahejie Formation (Es3) in the Shulu slope of the Bohai Bay Basin in China but with relatively low production. With the complex structural background of the Es3 of the Shulu slope, conventional research methods are ineffective in guiding the current development strategies. Therefore, this study adopts the S2S theory, and its elements are characterized by using core data, logging data, and seismic data. The study results suggest that the S2S in this study area was supplied by the Ningjin Uplift in the western region, and a fan delta and lake sedimentary systems formed by the sand transported through valleys and fault troughs. The S2S coupling model, “the Ningjin Uplift sand supply - fault trough, valley transport - fan delta, and shore-shallow lake sedimentation”, is established ultimately. This research field offers sand bodies prediction in continental rift basins with similar structural backgrounds.
DOI: 10.15372/GiG2024119 |
